Finding the Third Proportional to 31,375 and 67,299.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,375 : 67,299.50 = 67,299.50 : x
2. Step 2: Convert to fraction form
   31,375/67,299.50 = 67,299.50/x
3. Step 3: Cross multiply
   31,375x = 67,299.50 × 67,299.50
4. Step 4: Simplify right side
   31,375x = 4,529,222,700.25
5. Step 5: Solve for x
   x = 4,529,222,700.25/31,375
6. Step 6: Final answer
   x = 144,357.70